Cable wiring structure, operation device, and work machine

Abstract

A cable wiring structure includes a cable, a first holder, and a second holder. The cable connects a first appliance mounted in a work machine and a second appliance mounted in the work machine to transmit an electric signal. The cable includes a first held part and a second held part different from the first held part. The first holder holds the cable at the first held part. The second holds the cable at the second held part. A first range in which the cable bends at the first held part is smaller than a second range in which the cable bends at the second held part.

What is claimed is: 
     
       1. A cable wiring structure comprising:
 a cable connecting a first appliance mounted in a work machine and a second appliance mounted in the work machine to transmit an electric signal, the cable including a first held part and a second held part different from the first held part; 
 a first holder holding the cable at the first held part, the first holder having a first guide part that guides the cable and a first binding member that binds the cable to the first guide part; and 
 a second holder holding the cable at the second held part, a first range in which the cable bends at the first held part being smaller than a second range in which the cable bends at the second held part, the second holder having a second guide part that guides the cable and a second binding member that binds the cable to the second guide part, a contact area between the cable and the second binding member in a state where the cable is bound being smaller than a contact area between the cable and the first binding member in a state where the cable is bound. 
 
     
     
       2. The cable wiring structure according to  claim 1 , wherein
 the first guide part includes a first plate member which the cable contacts in the state where the cable is bound and two or more first restraining parts that are provided in the first plate member and which the first binding member contacts so that movement of the first binding member is restrained, 
 the second guide part includes a second plate member which the cable contacts in the state where the cable is bound and two or more second restraining parts that are provided in the second plate member and which the second binding member contacts so that movement of the second binding member is restrained, and 
 the second plate member includes a first plate that extends in a first direction and in which at least one of the second restraining parts is provided and a second plate that extends in a second direction different from the first direction and in which at least one of the second restraining parts is provided. 
 
     
     
       3. The cable wiring structure according to  claim 2 , wherein
 the first plate member and the second plate member are made of a metal material. 
 
     
     
       4. An operation device comprising:
 a grip part; 
 a shaft attached to the grip part; and 
 the cable wiring structure according to  claim 1 , the cable reaching the grip part. 
 
     
     
       5. The operation device according to  claim 4 , wherein
 the first guide part includes a first plate member which the cable contacts in the state where the cable is bound and two or more first restraining parts that are provided in the first plate member and which the first binding member contacts so that movement of the first binding member is restrained, 
 the second guide part includes a second plate member which the cable contacts in the state where the cable is bound and two or more second restraining parts that are provided in the second plate member and which the second binding member contacts so that movement of the second binding member is restrained, and 
 the second plate member includes a first plate that extends in a first direction and in which at least one of the second restraining parts is provided and a second plate that extends in a second direction different from the first direction and in which at least one of the second restraining parts is provided. 
 
     
     
       6. The operation device according to  claim 5 , wherein
 the first plate member and the second plate member are made of a metal material. 
 
     
     
       7. A work machine comprising:
 the cable wiring structure according to  claim 1 ; 
 the first appliance; and 
 the second appliance. 
 
     
     
       8. The work machine according to  claim 7 , wherein
 the first guide part includes a first plate member which the cable contacts in the state where the cable is bound and two or more first restraining parts that are provided in the first plate member and which the first binding member contacts so that movement of the first binding member is restrained, 
 the second guide part includes a second plate member which the cable contacts in the state where the cable is bound and two or more second restraining parts that are provided in the second plate member and which the second binding member contacts so that movement of the second binding member is restrained, and 
 the second plate member includes a first plate that extends in a first direction and in which at least one of the second restraining parts is provided and a second plate that extends in a second direction different from the first direction and in which at least one of the second restraining parts is provided. 
 
     
     
       9. The work machine according to  claim 8 , wherein
 the first plate member and the second plate member are made of a metal material. 
 
     
     
       10. The cable wiring structure according to  claim 1 , wherein the second appliance is movable with respect to the cable and wherein the second held part is provided between the second appliance and the first held part. 
     
     
       11. An operation device comprising:
 a grip part; 
 a shaft attached to the grip part; 
 an operation valve connected to the shaft to act in accordance with a swing of the shaft; 
 a main body in which the operation valve is contained; 
 a harness circling around the shaft from the main body to an inside of the grip part, the harness having a first part and a second part provided between the first part and the grip part in a lengthwise direction of the harness; and 
 a guide member that is provided between the main body and the grip part and guides the harness, the guide member having a first plate that guides the harness to a direction away from the shaft in a route through which the harness runs from the main body to the grip part, the second part having a second surface to be contacted with the first plate, the second surface facing toward a second contacting direction with respect to the lengthwise direction, the second contacting direction being perpendicular to the lengthwise direction, the guide member having a third plate that is contactable with the first part, the first part having a first surface to be contacted with the third plate, the first surface facing toward a first contacting direction with respect to the lengthwise direction, the first contacting direction being substantially equal to the second contacting direction. 
 
     
     
       12. The operation device according to  claim 10 , wherein
 the guide member has a second plate that guides the harness in a longitudinal direction of the shaft. 
 
     
     
       13. The operation device according to  claim 10 , wherein
 the guide member has an attachment part attached to the main body. 
 
     
     
       14. The operation device according to  claim 13 , further comprising a cover member that covers the shaft and the harness, wherein
 the cover member has a groove through which the harness passes. 
 
     
     
       15. An operation device comprising:
 a grip part; 
 a shaft attached to the grip part, the shaft extending in a longitudinal direction and having a first end and a second end opposite to the first end in the longitudinal direction; 
 a harness circling around the shaft from the first end to the second end, the harness having a first part and a second part provided between the first part and the grip part in a lengthwise direction of the harness; and 
 a guide member that guides the harness, the guide member having a first plate that guides the harness to a direction away from the shaft in a route through which the harness extends from the first end of the shaft to the second end of the shaft, the second part having a second surface to be contacted with the first plate, the second surface facing toward a second contacting direction with respect to the lengthwise direction, the second contacting direction being perpendicular to the lengthwise direction, the guide member having a third plate that is contactable with the first part, the first part having a first surface to be contacted with the third plate, the first surface facing toward a first contacting direction with respect to the lengthwise direction, the first contacting direction being substantially equal to the second contacting direction. 
 
     
     
       16. The operation device according to  claim 15 , wherein
 the guide member has a second plate that guides the harness in the longitudinal direction of the shaft.